Defensive publication



T g p 005 DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 0.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for :30 cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED MARCH 18, 1969 604 120 PURIFICATION OF ORCANIC CHEMICALS BY SELECTIVE EXUDATION FROM SOLID SUPER- SATURATED SOLUTION IN ANOTHER 0R- GANl-C MATERIAL John W. Tamblyn, P.O. Box 92, Jonas Ridge, N.C.

28641, and Gordon C. Newland, P.0. Box 511, Kingsport, Tenn. 37662 Filed Dec. 23, 1966. Published Mar. 18, 1969 Class 260--94.9 No Drawing. 19 Pages Specification Crude organic materials may be purified by incorporating them into an organic matrix material in an amount in excess of normal compatibility under ambient conditions and thereafter causing the organic materials to exude from the organic matrix in purified form. Incorporation of the organic materials into the organic matrix materials is usually accomplished under elevated temperatures whereat both components are in a fluid state. Subsequent cooling of the blended materials results in the exudation of the purified organic material from the organic matrix. The method is particularly suitable for purifying various stabilizer compounds such as antioxidants, UV inhibitors, and the like, using polyolefins as the organic matrix material. 

